Ultra-stable low-coordinated PtSA/CeZrO2 ordered macroporous structure integrated industrial-scale monolithic catalysts for high-temperature oxidation
Platinum-group metals (Pt) commonly used in thermal catalytic processes often suffer from catalyst deactivation, such as Pt sintering, Pt overoxidation, and Pt loss under high-temperature conditions. To address these, we present a novel Pt<sub>SA</sub>/CeZrO<sub>2</sub> catalyst, featuring isolated Pt single atoms (Pt<sub>SA</sub>) on a Ce<sub>0.8</sub>Zr<sub>0.2</sub>O<sub>2</sub> support with an ordered macroporous (OM) structure. Firstly, Zr-stabilized dynamic low-coordinated Pt<sub>SA</sub> releases more free d-electrons by reducing Pt-O bond occupation, thereby preserving peroxide activity at high temperatures and enhancing propane C-H activation. Additionally, the OM structure prevents Pt loss and reduces Pt loading to 0.4 g<sub>Pt</sub>/L, compared with 0.9 g<sub>Pt</sub>/L in commercial diesel oxidation catalysts. As a result, the Pt<sub>SA</sub>/CeZrO<sub>2</sub> maintains 92% conversion at 450 °C even after 50 h aging at 800 °C with 10 vol.% H<sub>2</sub>O. Finally, the catalyst is integrated into a 3.4-liter commercial cordierite monolith for developing and scaling robust catalytic converters.
Authors
- Shaowen Zhang (ORCID: https://orcid.org/0000-0003-2415-3872)
- Weidong Yuan
- Zhu Luo (ORCID: https://orcid.org/0000-0002-4766-3499)
- Yanbing Guo (ORCID: https://orcid.org/0000-0002-5399-1739)
- Bosheng Chen (ORCID: https://orcid.org/0000-0002-1523-3072)
- Biluan Zhang
- Liangwei Li (ORCID: https://orcid.org/0009-0001-2658-1080)
- Jinlong Wang (ORCID: https://orcid.org/0000-0002-0397-4113)
- Rui Liu (ORCID: https://orcid.org/0000-0002-8227-6064)
- Weihong Guo
- Baojian Zhang (ORCID: https://orcid.org/0009-0008-2912-2307)
- Pan Li (ORCID: https://orcid.org/0000-0003-1847-4434)
- Ji Yang
Institutions
- Wuhan University of Technology (CN)
- Central China Normal University (CN)
- Wuhan Institute of Technology (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-08-22
- DOI
- https://doi.org/10.1038/s41467-025-63112-y
- Citations
- 4
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 2.07
Funders
- National Natural Science Foundation of China
- Central China Normal University
- Project 211